Blog Archives

Sunbelt and EUSN workshops on using R and ‘igraph’ for SNA

March 4, 2016
By

I would like to (re)announce the workshop I will be giving on using R and ‘igraph’ for Social Network Analysis on the upcoming Sunbelt 2016 conference in Newport Beach. My goal is to provide gentle and practical tour through the SNA functionality of R package “igraph”. The exact date of the Sunbelt workshop is Tuesday

Read more »

Szkolenie z analizy sieciowej

November 13, 2015
By
Szkolenie z analizy sieciowej

Summary in English: We are organizing a two-day workshop on network analysis in R. The dates are 2-3 of December, 2015. The workshop will be in Polish. For more information and registration see this page. Zapraszamy na szkolenie z analizy sieciowej w R w dniach 2-3 grudnia 2015. Analiza sieci społecznych (ang. Social Network Analysis,

Read more »

Linear models with weighted observations

September 4, 2015
By
Linear models with weighted observations

In data analysis it happens sometimes that it is neccesary to use weights. Contexts that come to mind include: Analysis of data from complex surveys, e.g. stratified samples. Sample inclusion probabilities might have been unequal and thus observations from different strata should have different weights. Application of propensity score weighting e.g. to correct data being

Read more »

Alluvial diagrams

March 27, 2014
By
Alluvial diagrams

Parallel coordinates plot is one of the tools for visualizing multivariate data. Every observation in a dataset is represented with a polyline that crosses a set of parallel axes corresponding to variables in the dataset. You can create such plots in R using a function parcoord in package MASS. For example, we can create such

Read more »

Gadka na SERze

March 9, 2014
By
Gadka na SERze

These are slides from the very first SER meeting – an R user group in Warsaw – that took place on February 27, 2014. I talked about various “lifehacking” tricks for R and focused how to use R with GNU make effectively. I will post some detailed examples in forthcoming posts. Oto moje slajdy z pierwszego Spotkania Entuzjastów

Read more »

Package intergraph goes 2.0

May 9, 2013
By

Yesterday I submitted a new version (marked 2.0-0) of package ‘intergraph’ to CRAN. There are some major changes and bug fixes. Here is a summary: The package supports “igraph” objects created with ‘igraph’ version 0.6-0 and newer (vertex indexing starting from 1, not 0) only! Main functions for converting network data between object classes “igraph”

Read more »

R Color Reference Sheet

April 16, 2013
By
R Color Reference Sheet

R has a built-in collection of 657 colors that you can use in plotting functions by using color names. There are also various facilities to select color sequences more systematically: Color palettes and ramps available in packages RColorBrewer and colorRamps. R base functions colorRamp and colorRampPalette that you can use to create your own color

Read more »

Brokering Closure is moving

August 10, 2012
By
Brokering Closure is moving

Dear readers, this blog is moving out from wordpress.com to a new location. The new address is http://bc.bojanorama.pl. Please update your bookmarks. Drodzy czytelnicy, blog “Brokering Closure” wyprowadza się z wordpress.com pod nowy adres: http://bc.bojanorama.pl. Zaktualizujcie swoje linki/zakładki. Filed under: game theory, geek, networks, po polsku, R, social science, statistics, Uncategorized, web

Read more »

Correction to intergraph update

June 19, 2012
By

It turned out that I wrote the last post on “intergraph” package too hastily. After some feedback from CRAN maintainers and deliberation I decided to release the updated version of the “intergraph” package under the  original name (so no new package “intergraph0″) with version number 1.2. This version relies on legacy “igraph” version 0.5, which

Read more »

Updates to package ‘intergraph’

June 18, 2012
By

On June 17 a new version (0.6) of package ”igraph” was released. This new version abandoned the old way of indexing graph vertices with consecutive numbers starting from 0. The new version now numbers the vertices starting from 1, which is more consistent with the general R convention of indexing vectors, matrices, etc. Because this change is

Read more »

Sponsors

Mango solutions



RStudio homepage



Zero Inflated Models and Generalized Linear Mixed Models with R

Quantide: statistical consulting and training



http://www.eoda.de







ODSC

ODSC

CRC R books series





Six Sigma Online Training





Contact us if you wish to help support R-bloggers, and place your banner here.

Never miss an update!
Subscribe to R-bloggers to receive
e-mails with the latest R posts.
(You will not see this message again.)

Click here to close (This popup will not appear again)